Fresh leaves direct from the plant are far more potent for quidding though. That skews any equations which might be based on moisture content, regardless of how much
salvinorin A they might contain. This actually hints that there may be an unstable photosensitive compound which is even more potent than salvinorin A
Or it could be due to some kind of bioavailability effect with the fresh material.
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli